diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e3d8fdc..de8f177 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -33,7 +33,7 @@ jobs:
     - name: Setup Go
       uses: actions/setup-go@cdcb36043654635271a94b9a6d1392de5bb323a7 # tag=v5.0.1
       with:
-        go-version: "1.20"
+        go-version: "1.22"
         check-latest: true
         cache: false
     - name: Run golangci-lint
@@ -49,9 +49,9 @@ jobs:
     strategy:
       matrix:
         go:
-        - "1.18"
-        - "1.19"
         - "1.20"
+        - "1.21"
+        - "1.22"
     steps:
     - name: Setup Go
       uses: actions/setup-go@cdcb36043654635271a94b9a6d1392de5bb323a7 # tag=v5.0.1
diff --git a/.github/workflows/goreleaser.yml b/.github/workflows/goreleaser.yml
index 8b7d70a..3801bc9 100644
--- a/.github/workflows/goreleaser.yml
+++ b/.github/workflows/goreleaser.yml
@@ -22,7 +22,7 @@ jobs:
     - name: Setup Go
       uses: actions/setup-go@cdcb36043654635271a94b9a6d1392de5bb323a7 # tag=v5.0.1
       with:
-        go-version: "1.20"
+        go-version: "1.22"
         check-latest: true
     - name: Install cyclonedx-gomod
       uses: CycloneDX/gh-gomod-generate-sbom@efc74245d6802c8cefd925620515442756c70d8f # tag=v2.0.0
diff --git a/README.md b/README.md
index 807287e..5b78dc8 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,8 @@ Also, checkout the [`examples`](./example_test.go) to get an idea of how this li
 |       == v0.4.0       |         1.14+         |           1.3            |
 |  >= v0.5.0, < v0.7.0  |         1.15+         |           1.4            |
 |  >= v0.7.0, < v0.8.0  |         1.17+         |         1.0-1.4          |
-|       >= v0.8.0       |         1.18+         |         1.0-1.5          |
+|       == v0.8.0       |         1.18+         |         1.0-1.5          |
+|       >= v0.9.0       |         1.20+         |         1.0-1.6          |
 
 We're aiming to support all [officially supported](https://golang.org/doc/devel/release.html#policy) Go versions, plus
 an additional older version.
diff --git a/decode.go b/decode.go
index 508791c..34d2fee 100644
--- a/decode.go
+++ b/decode.go
@@ -21,7 +21,6 @@ import (
 	"encoding/json"
 	"encoding/xml"
 	"io"
-	"io/ioutil"
 )
 
 type BOMDecoder interface {
@@ -41,7 +40,7 @@ type jsonBOMDecoder struct {
 
 // Decode implements the BOMDecoder interface.
 func (j jsonBOMDecoder) Decode(bom *BOM) error {
-	bytes, err := ioutil.ReadAll(j.reader)
+	bytes, err := io.ReadAll(j.reader)
 	if err != nil {
 		return err
 	}
diff --git a/go.mod b/go.mod
index 4d583a3..632cb7b 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/CycloneDX/cyclonedx-go
 
-go 1.18
+go 1.20
 
 require (
 	github.com/bradleyjkemp/cupaloy/v2 v2.8.0